Cold fronts are most commonly
associated with what type of weather
event?

What term is given to the border between the central alps and the southern limestone alps?

The graph below plots the temperature and luminosity of stars on the main sequence.

Ascientist is explaining how background cosmic radiation gives evidence of the big bang theory. she says that radiation has been detected everywhere equally as heat in the universe and is increasing. this has been shown to be residual radiation from the big bang. what error did the scientist make?